US4083375A - Pilot regulator - Google Patents

Pilot regulator Download PDF

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Publication number
US4083375A
US4083375A US05/659,146 US65914676A US4083375A US 4083375 A US4083375 A US 4083375A US 65914676 A US65914676 A US 65914676A US 4083375 A US4083375 A US 4083375A
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US
United States
Prior art keywords
pressure
valve
control
pilot
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/659,146
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English (en)
Inventor
Dwight N. Johnson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Atos Origin IT Services Inc
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US05/659,146 priority Critical patent/US4083375A/en
Priority to AU22105/77A priority patent/AU502435B2/en
Priority to JP1544777A priority patent/JPS52105330A/ja
Priority to NL7701625A priority patent/NL7701625A/xx
Priority to BR7700943A priority patent/BR7700943A/pt
Priority to CA272,013A priority patent/CA1040507A/en
Priority to FR7704548A priority patent/FR2341890A1/fr
Priority to GB6613/77A priority patent/GB1537409A/en
Priority to DE19772707171 priority patent/DE2707171A1/de
Application granted granted Critical
Publication of US4083375A publication Critical patent/US4083375A/en
Assigned to SANGAMO WESTON, INC. reassignment SANGAMO WESTON, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TEXTRON INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/02—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm
    • F16K7/04—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force
    • F16K7/07—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force by means of fluid pressure
    • F16K7/075—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force by means of fluid pressure a rigid body being located within the tubular diaphragm
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/14—Control of fluid pressure with auxiliary non-electric power
    • G05D16/16—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid
    • G05D16/163—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid using membranes within the main valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2278—Pressure modulating relays or followers
    • Y10T137/2409—With counter-balancing pressure feedback to the modulating device
    • Y10T137/2452—With counter-counter balancing pressure feedback
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type
    • Y10T137/7764—Choked or throttled pressure type

Definitions

  • the present invention relates to pilot regulators for the servo-control of valves of the type used in compressible fluid pipelines or conduits. More specifically, the invention relates to improvements in pilot regulators for achieving both rapid response and stable regulation.
  • a typical valve used in gas service for control of flow through a pipeline or conduit includes an inlet, an outlet, and a valve member movable in the flow path. Such a valve may be operated in an on-off fashion between opened and closed positions, and also may be used as a flow or pressure regulator in which case the valve member is normally positioned in intermediate or throttling positions.
  • One valve configuration having wide use in large pipelines, for example up to 12 inches, includes a resilient sleeve controlling axial flow around a central barrier in the flow path.
  • a control pressure is applied in a pressure chamber surrounding the sleeve, and the valve is opened as the sleeve is expanded outwardly by reduction in control pressure relative to inlet pressure. Examples of valves of this type are disclosed in U.S. Pat. Nos. 3,371,677 - Connolly and 3,838,704 - Johnson.
  • control pressure is typically derived from inlet pressure by a feedback pilot control system including a pilot regulator.
  • the valve inlet is communicated to the pilot regulator through a flow restrictor, and the regulator includes a pilot valve for exhausting or bleeding pressure to atmosphere or to a region of low pressure in the pipeline or conduit.
  • Control pressure for operating the main valve is obtained from a control chamber located between the restrictor and pilot valve, and is determined by the degree to which opening of the pilot valve causes a reduction in control pressure relative to inlet pressure.
  • the pilot valve is operated by a piston means biased in one direction by a reference pressure or force provided by a spring load and/or by a source of reference pressure.
  • the piston means is biased in the opposite direction by a static pressure or feedback signal obtained from the region in the fluid system where pressure regulation is to be effected.
  • the term "piston means" as used herein is intended to encompass pressure-operated, movable structures such as pistons, valve spools, diaphragms and the like.
  • a servo-loop or control loop in which changes in the static pressure to be regulated result in opening or closing of the pilot valve and in consequent changes in the control pressure and the main valve position.
  • pilot valve operation and control pressure adjustment
  • pilot valve embodying important structural and cost saving features including simplicity of design, incorporation of an integral flow restrictor, lack of necessity for an adjustable flow restrictor between the main valve inlet and the pilot valve, and the capability for ready adjustment of the delay encountered in gradual reset movement of the pilot valve.
  • an improved pilot regulator including a housing in which a pressure operated piston means or diaphragm assembly is mounted for reciprocal movement to control the opening and closing of a pilot valve.
  • the regulator is adapted to be interconnected for servo-control of a main valve, and the main valve inlet is communicated with a control chamber through a fixed inlet restrictor defined in the pilot regulator housing. Exhausting of the control chamber through the pilot valve is controlled by movement of the diaphragm assembly to develop a control signal for operation of the main valve.
  • the diaphragm assembly is subjected to a reference force by means of a spring, reference pressure, or the like.
  • An opposing force is applied to the diaphragm assembly by means of static pressure communicated from the region in the fluid system to be pressure regulated by the main valve. Fluctuations in static pressure result in movements of the diaphragm assembly causing opening or closing of the pilot valve and consequent changes in control pressure and in main valve positioning.
  • a delay chamber is defined in the pilot regulator housing, and the delay chamber is in restricted, adjustable pressure communication with the control chamber.
  • the pressures within the delay and control chambers are applied to the diaphragm assembly in opposing directions.
  • the diaphragm assembly moves rapidly through a portion of the movement required to return static pressure to the desired level.
  • a pressure imbalance between the delay chamber and the control chamber prevents continued rapid movement.
  • the diaphragm assembly moves gradually through the remainder of the movement required to achieve full reset.
  • FIG. 1 is a diagrammatic and schematic illustration of a pressure regulation system incorporating a pilot regulator constructed in accordance with the present invention
  • FIG. 2 is a perspective view of a pilot regulator constructed in accordance with the present invention.
  • FIG. 3 is a cross sectional view of the pilot regulator of FIG. 2 taken along the line 3--3 of FIG. 2;
  • FIG. 4 is a cross sectional view of the pilot regulator of FIG. 2 taken along the line 4--4 of FIG. 3;
  • FIG. 5 is a cross sectional view of the pilot regulator of FIG. 2 taken along the line 5--5 of FIG. 3.
  • FIG. 1 there is illustrated in simplified diagrammatic and schematic form a servo-control system designated as a whole by the reference numeral 10 including a pilot regulator generally designated as 12 and embodying principles of the present invention.
  • the system 10 includes a valve generally designated as 14 for controlling the flow of a compressible fluid or gas through a conduit or pipeline 16 including an upstream or inlet pipe 17 connected to a source of pressurized fluid and a downstream or outlet pipe 18 supplying fluid to one or more pressurized fluid utilization devices.
  • the pressure regulator 12 is interconnected with valve 14 for operating the valve 14 to provide pressure regulation of fluid flowing in the conduit or pipeline 16.
  • regulator 12 is provided with a delay arrangement generally designated by the reference numeral 20 for achieving rapid response and stable operation.
  • valve 14 may be of any desired construction because the pilot regulator 12 of the present invention is capable of controlling valves of many types wherein control is achieved by means of amplitude variations in a pressure control signal.
  • valve 14 includes a housing structure 22 mounted between fittings of the pipes 17 and 18 and having a valve inlet 24 and a valve outlet 26.
  • a central barrier 28 is disposed between a number of inlet flow slots 30 and outlet flow slots 32.
  • An axial flow path 34 including the slots 30 and 32 surrounds the central barrier 28.
  • Flow through the valve 14 in the illustrated arrangement is controlled by the positioning of a flexible, resilient valve member or sleeve 36. Positioning of the sleeve 36 between open, closed and intermediate throttling positions is accomplished by the application of control pressure to a pressure chamber 38 within the housing structure 22 surrounding the sleeve 36. Control pressure is communicated to pressure chamber 38 by means of a control port 40 formed in housing structure 22. Housing structure 22 also includes additional ports 42 and 44 communicating respectively with the main valve inlet 24 and the main valve outlet 26. Reference may be had to the above referenced U.S. Pat. Nos. 3,371,677 and 3,838,704 for detailed descriptions of valves of the general type illustrated in the drawings of the present application.
  • the pilot regulator 12 operates the valve 14 to provide downstream pressure regulation of the fluid flowing in the conduit 16, -- i.e., the valve 14 is operated to produce constant fluid pressure at the valve outlet 26.
  • the present invention is not limited to this specific type of pressure regulation and the pilot regulator 12 can readily be adapted to provide other types of regulation.
  • the pilot regulator 12 includes a housing structure 46 defining a control chamber 48 communicating with the pressure chamber 38 of valve 14 by way of a pilot regulator control port 50 and a conduit 52.
  • Control pressure is derived from main valve inlet pressure, and control chamber 48 is connected to main valve inlet 24 by means of a conduit 54, an inlet port 56 in the pilot regulator housing structure 46, and a flow restrictor 58 of fixed cross sectional area.
  • Pressure is selectively bled or exhausted from control chamber 48 by means of a pilot valve 60 through an exhaust port 62.
  • the exhaust port 62 may exhaust fluid directly to atmosphere, or as in the illustrated arrangement through an exhaust conduit 64 connected downstream in the pipeline 16.
  • the pilot valve 60 is closed, the control pressure established within the control chamber 48 is equal to pressure existing at the inlet 24 of the valve 14. Under these circumstances, the sleeve 36 is pressure biased into engagement with the central barrier 28 and the main valve 14 is closed.
  • the pilot valve 60 and main valve 14 are illustrated in an intermediate throttling position wherein the pilot valve 60 is partially open. In this condition, fluid flows through a series flow circuit including the restrictor 58 and the pilot valve 60, and the control pressure existing in control chamber 48 is lower than main valve inlet pressure by an amount equal to the pressure drop across restrictor 58. This intermediate control pressure is communicated to the pressure chamber 38 and results in partial opening or throttling operation of the valve 14.
  • Opening and closing of the pilot valve 60 is controlled by a piston means in the form of a diaphragm assembly generally designated as 66 mounted for reciprocal movement within the pilot regulator housing structure 46.
  • a piston means in the form of a diaphragm assembly generally designated as 66 mounted for reciprocal movement within the pilot regulator housing structure 46.
  • the pilot valve 60 is opened and the control pressure existing within chamber 48 decreases.
  • the pilot valve 60 closes and control pressure increases.
  • the diaphragm assembly 66 and the housing structure 46 define a reference chamber 68 and a static chamber 70 for biasing the diaphragm assembly 66 in opposite directions thereby to control the pilot valve 60 in accordance with static pressure changes.
  • the reference and static chambers 68 and 70 are disposed at opposite ends of the diaphragm assembly 66, but this specific configuration is not necessary in achieving many of the objects of the present invention.
  • Reference chamber 68 is provided with suitable means of any known character for applying to the diaphragm assembly 66 a reference force or pressure.
  • a reference spring 72 urges the diaphragm assembly 66 toward the right as illustrated in FIG. 1.
  • the reference chamber 66 is communicated with a source of reference pressure through a reference port 74 formed in housing structure 46.
  • Spring 72 may be augmented or replaced by atmospheric or other reference pressure.
  • a static pressure corresponding to the parameter to be controlled by the pilot regulator 12 is communicated to the static pressure chamber 70.
  • the servo-control system 10 serves to regulate downstream main valve pressure, and the static chamber 70 is therefore communicated with the valve outlet 26 by means of a static pressure port 76 and a conduit 78.
  • pilot valve 60 is operated to a partially opened condition so that control pressure established in chamber 48 operates main valve 14 to a throttling condition for producing a downstream pressure in pipeline 16 corresponding to the desired level established by reference pressure.
  • control pressure established in chamber 48 operates main valve 14 to a throttling condition for producing a downstream pressure in pipeline 16 corresponding to the desired level established by reference pressure.
  • static pressure within chamber 70 also decreases causing opening of the pilot valve 60 thereby to decrease control pressure and further open valve 14.
  • pilot valve 60 is urged toward a more closed position resulting in an increase in control pressure and closing movement of main valve 14.
  • the delay arrangement 20 is provided for permitting fast response of the pilot regulator 12 without the introduction of the instability in operation which has characterized pilot regulators known in the past. More specifically, the delay arrangement 20 includes a delay chamber 80 intercommunicated with the control chamber 48 by means of a flow restriction 82. In the illustrated arrangement, the flow restriction 82 is adjustable to the end that the duration or response time of the delay imposed by the delay arrangement 20 can be adjusted to suit operating requirements of the system 10.
  • the diaphragm assembly 66 is capable of moving abruptly through a portion of this range of movement, and is prevented from continuing its full movement in an abrupt fashion. In this manner, undesirably large fluctuations or adjustments of the main valve 14 are avoided.
  • the delay arrangement 20 permits gradual further movement of the diaphragm assembly 66 until the full reset action to the new null or set point is completed.
  • each of the pilot regulator pressure chambers 48, 68, 70 and 80 in the illustrated arrangement is of equal area, although this specific configuration is not required.
  • reference chamber 68 is provided with a pressure or force equivalent to 30 psi.
  • the static pressure in chamber 70 is also 30 psi.
  • Pilot valve 60 is partially open and inlet pressure is reduced by flow through restrictor 58 and pilot valve 60 to create a control pressure, assumed initially, for example, to be 90 psi. This control pressure is applied to valve sleeve 36 in pressure chamber 38 of valve 14, and valve 14 is in a partially open or throttling condition permitting flow sufficient to maintain downstream pressure at the desired static level of 30 psi.
  • An abrupt increase in flow demand by one or more downstream fluid utilization devices results in an abrupt, transient decrease in static pressure. Assuming a decrease of 5 psi in static pressure, the pressure in static pressure chamber 70 decreases from 30 to 25 psi. As a result, the diaphragm assembly 66 is subjected to a net pressure imbalance of 5 psi, and the diaphragm assembly 66 consequently moves rapidly to the right as illustrated in FIG. 1 to cause additional opening of pilot valve 60.
  • the pilot valve 60 opens a predetermined amount to decrease the control pressure existing in chamber 48, thus decreasing the pressure in pressure chamber 38 and causing further opening of the valve 14.
  • This initial drop in control pressure equals 5 psi, and the control pressure abruptly drops from 90 to 85 psi. Due to the provision of the restriction 82, the pressure in delay chamber 80 does not abruptly drop from 90 to 85 psi but rather remains effectively at 90 psi. Consequently, after the initial abrupt movement of diaphragm assembly 66, the assembly 66 is once again in a pressure balanced condition and rapid movement is limited to this initial portion of the total reset movement.
  • the reference pressure remains at an effective 30 psi while the static pressure is at 25 psi.
  • the pressure within the delay chamber 80 is 90 psi, while the pressure within the control chamber 48 is 85 psi.
  • the rapid partial opening of pilot valve 60 permits valve 14 to rapidly open to a sufficient extent to make up downstream flow demand so that the 25 psi static pressure is maintained.
  • the pressure imbalance provided by the present invention between chambers 48 and 80 thus limits the rapid initial movement of diaphragm assembly 66 to the limited amount required to produce a control pressure change equal to the static pressure change.
  • the pressure regulator 12 can be adapted to other types of pressure regulation.
  • the static pressure chamber 70 is interconnected to receive a pressure corresponding to the parameter to be controlled, and the reference pressure is applied in opposition to the static pressure in the direction necessary to bring about the desired opening and closing operation of pilot valve 60.
  • a pressure relief or upstream pressure regulation function can be accomplished by reversing the directions in which reference pressure and static pressure act on the diaphragm assembly 66 with respect to the pilot valve 60.
  • static or feedback pressures are applied to both chambers 68 and 70.
  • the housing structure 46 includes a body member 88 clamped between a spring housing 90 and an end cover 92 by means of flange bolts 94 cooperating with ears or flanges 96 on the housing 90 and cover 92. Diaphragms 84 and 86 are sandwiched respectively between the body 88 and cover 92 and between the body 88 and the spring housing 90.
  • the diaphragm assembly 66 includes a tie rod 98 carrying two clamping plates 100 and 102 clamped against opposite sides of diaphragm 84 and two clamping plates 104 and 106 clamped against opposite sides of diaphragm 86.
  • the diaphragm assembly 66 is held in assembled relation by means of a pair of nuts 108 and 110 threaded on the ends of tie rod 98.
  • Reference spring 72 is held in compression between plate 104 and a spring pressure member 112. Adjustment of reference spring loading is accomplished by means of an adjustment shaft 114 threadably received in a cap 116 carried at the end of spring housing 90. A lock nut 118 serves to retain the shaft 114 in its adjusted position.
  • Reference port 74 is formed in spring housing 90 for communicating atmospheric or other reference pressure to the reference chamber 68.
  • Static pressure is applied in static chamber 70 in opposition to the reference pressure or force applied in the reference chamber 68.
  • the static chamber 70 is defined within end cover 92 adjacent diaphragm 84, and communicates with static pressure port 76.
  • control port 50, inlet port 56 and exhaust port 62 are formed in body member 88 and extend outwardly in a radial direction with respect to the central longitudinal axis of the body member.
  • the body member is also provided with a central, axial opening 120 for reciprocation of the diaphragm assembly tie rod 98 therethrough.
  • Control chamber 48 is defined in one end of body 88 adjacent diaphram 84
  • delay chamber 80 is defined in the opposite end of body 88 adjacent diaphragm 86.
  • An O-ring seal 122 prevents pressure communication around the tie rod 98 through the opening 120 between the control and delay chambers 48 and 80.
  • the inlet port 56 communicates with the control chamber 48 by means of the flow restrictor 58.
  • the restrictor 58 comprises a simple drilled hole in body member 88. This construction is possible since adjustment of restrictor 58 is not necessary with the pilot regulator 12 of the present invention due to the fact that the delay arrangement 20 provides ample stability and response. Consequently, in contrast to pilot regulation arrangements known in the past, restrictor 58 may be formed integrally with the housing structure 46 rather than comprising a separate component of the control system.
  • Pilot valve 60 comprises a fixed valve seat or orifice member 124 carried by the body 88 and communicating the control chamber 48 with the exhaust port 62.
  • a resilient annular insert 126 in the clamping plate 100 comprises a movable valve member cooperating with the valve seat 124. This is an extremely simple pilot valve structure, in contrast to known pilot regulators requiring complex movable structures for producing pilot valve operation.
  • control port 50 communicates with the control chamber 48 by means of an unrestricted passage 128 formed in body 88. In this manner, control pressure is communicated from the control chamber 48 for the control of an external main valve in accordance with position of the diaphragm assembly 66.
  • the delay chamber 80 is in restricted adjustable communication with the control chamber 48.
  • the adjustable restriction is provided by means of a rotor member 130 rotatably carried in an opening 132 formed in body 88 as an extension of the control port 50.
  • Rotor 130 communicates with control chamber 48 by means of the unrestricted passage 128, the inner portion of control port 50, and a reduced cross sectional area portion 134 of tie rod 98.
  • Rotor 130 is provided with a central cavity 136 preferably containing a filter cartridge for preventing fouling of the adjustable restriction 82.
  • a radial opening 138 intercommunicates the central opening 136 with a variable width groove 140 circumscribing the outer periphery of rotor 130.
  • a passage 142 aligned with the groove 140 extends to the delay chamber 80.
  • the variable restriction 82 comprises the interface between groove 140 and passage 142, and the restriction is readily adjusted by rotation of the rotor 130 as by engagement of a head portion 144 of the rotor with a screwdriver or other tool.
  • the restriction size may be adjusted from a maximum to a minimum, and preferably the groove configuration is such that the restriction can never be entirely closed.
  • the pilot regulator 12 of the present invention is adapted for liquid as well as gas service.
  • liquid service because the fluid medium is not compressible, the operation of the pilot regulator differs.
  • the delay arrangement 20 in liquid service functions simply as a dashpot providing hydraulic damping of the movements of diaphragm assembly 66. Because a liquid in delay chamber 80 is not compressible, a rapid, partial, initial response of diaphragm 66 is not permitted. If no damping is desired in liquid service, or if no delay is desired in gas service, the restriction 82 can be omitted simply by removing rotor 130, enlarging passage 142 if necessary, and closing the outer end of opening 132.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Fluid Pressure (AREA)
  • Safety Valves (AREA)
US05/659,146 1976-02-18 1976-02-18 Pilot regulator Expired - Lifetime US4083375A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US05/659,146 US4083375A (en) 1976-02-18 1976-02-18 Pilot regulator
AU22105/77A AU502435B2 (en) 1976-02-18 1977-02-09 Pilot regulator
JP1544777A JPS52105330A (en) 1976-02-18 1977-02-15 Pilot regulator for survo control system
BR7700943A BR7700943A (pt) 1976-02-18 1977-02-16 Aperfeicoamento em regulador piloto para emprego com um conduto de fluido
NL7701625A NL7701625A (nl) 1976-02-18 1977-02-16 Stuur-regulator voor servo-bediende klep.
CA272,013A CA1040507A (en) 1976-02-18 1977-02-17 Pilot regulator
FR7704548A FR2341890A1 (fr) 1976-02-18 1977-02-17 Regulateur pour servocommande de valves
GB6613/77A GB1537409A (en) 1976-02-18 1977-02-17 Pilot regulator
DE19772707171 DE2707171A1 (de) 1976-02-18 1977-02-18 Pilotregler zur verwendung mit einer arbeitsmittelleitung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/659,146 US4083375A (en) 1976-02-18 1976-02-18 Pilot regulator

Publications (1)

Publication Number Publication Date
US4083375A true US4083375A (en) 1978-04-11

Family

ID=24644234

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/659,146 Expired - Lifetime US4083375A (en) 1976-02-18 1976-02-18 Pilot regulator

Country Status (9)

Country Link
US (1) US4083375A (ja)
JP (1) JPS52105330A (ja)
AU (1) AU502435B2 (ja)
BR (1) BR7700943A (ja)
CA (1) CA1040507A (ja)
DE (1) DE2707171A1 (ja)
FR (1) FR2341890A1 (ja)
GB (1) GB1537409A (ja)
NL (1) NL7701625A (ja)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253484A (en) * 1979-07-26 1981-03-03 The Singer Company Valve operator
US4285362A (en) * 1980-02-04 1981-08-25 Sperry Corporation Power transmission
US4366672A (en) * 1979-02-02 1983-01-04 Parker-Hannifin Corporation Pilot operated hydraulic device
DE3447650A1 (de) * 1983-12-28 1985-07-25 Dieter Hans Friederich Sandton Transvaal Kallenbach Ventilanordnung und hiermit versehener schwimmbeckenreiniger
US4618123A (en) * 1984-03-22 1986-10-21 Ford Motor Company Valve system for a hydraulically controlled starting friction clutch
US4841980A (en) * 1985-11-25 1989-06-27 Lee Arnold St J Automatic arterial blood pressure recorder system
US4926874A (en) * 1985-11-25 1990-05-22 Lee Arnold St J Method for determining blood pressure
WO1991001522A1 (en) * 1989-07-24 1991-02-07 United Technologies Corporation Compensated pressure controller
US5230362A (en) * 1989-07-24 1993-07-27 United Technologies Corporation Compensated pressure controller
US6173735B1 (en) 1999-04-29 2001-01-16 Perry Equipment Corporation Method and apparatus for regulating gas flow
US6418956B1 (en) * 2000-11-15 2002-07-16 Plast-O-Matic Valves, Inc. Pressure controller
US7665713B1 (en) * 2006-06-21 2010-02-23 Hunter Industries, Inc. Sleeve valve for residential and commercial irrigation systems
US20130213496A1 (en) * 2012-02-16 2013-08-22 Mike Lybarger Pressure control system for relief and shutdown of flow
WO2014060746A1 (en) * 2012-10-16 2014-04-24 Nano-Porous Solutions Limited Pressure swing adsorption apparatus
US20170284604A1 (en) * 2014-07-18 2017-10-05 Instrument Solutions Inc. System, method, and apparatus for regulating the flow of gas
US20190145538A1 (en) * 2017-11-14 2019-05-16 Sur-Flo Meters & Controls Ltd Valve with Expandable Sleeve Fitted Over Perforated Walls of Inlet and Outlet Channels to Control Flow Therebetween
CN112253758A (zh) * 2020-09-15 2021-01-22 西藏道一科技设备有限公司 一种高原耐磨换气阀
CN112594421A (zh) * 2020-12-30 2021-04-02 海盐沃企机电设备有限公司 一种先导式安全阀的导阀结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3828002A1 (de) * 1988-08-18 1990-02-22 Regel Messtechnik Gmbh Pneumatisch arbeitendes gas-druckregelgeraet

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US459268A (en) * 1891-09-08 Pop safety-valve
US802496A (en) * 1904-04-22 1905-10-24 George W Collin Steam-pressure-reducing valve.
US1228104A (en) * 1915-08-18 1917-05-29 Chaplin Fulton Mfg Company Valve.
US1311536A (en) * 1919-07-29 Fluid-control valve
US2424328A (en) * 1944-09-07 1947-07-22 Frank L Pars Valve
US2672882A (en) * 1949-09-30 1954-03-23 Theodore W Bergquist Safety valve
US2888941A (en) * 1952-12-13 1959-06-02 Honeywell Regulator Co Air-pressure-operated proportional band adjustment
US2990847A (en) * 1959-05-25 1961-07-04 Marquardt Corp Fluid flow regulator
US3056417A (en) * 1958-10-03 1962-10-02 Honeywell Regulator Co Controlling apparatus
US3143134A (en) * 1960-12-12 1964-08-04 John J Karpis Fluid regulator
US3276467A (en) * 1964-01-16 1966-10-04 Phillips Petroleum Co Vapor pressure control in liquefied gas dispensing
US3373765A (en) * 1965-10-23 1968-03-19 Controls Co Of America Electric reset for pneumatic sensor control
US3586025A (en) * 1969-06-19 1971-06-22 Foxboro Co Fluid system resistance temperature compensation
US3669142A (en) * 1970-10-16 1972-06-13 Grove Valve & Regulator Co Expansible tube valve with low pressure bleed
US3823726A (en) * 1971-07-13 1974-07-16 Honeywell Inc Pneumatic control unit

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US459268A (en) * 1891-09-08 Pop safety-valve
US1311536A (en) * 1919-07-29 Fluid-control valve
US802496A (en) * 1904-04-22 1905-10-24 George W Collin Steam-pressure-reducing valve.
US1228104A (en) * 1915-08-18 1917-05-29 Chaplin Fulton Mfg Company Valve.
US2424328A (en) * 1944-09-07 1947-07-22 Frank L Pars Valve
US2672882A (en) * 1949-09-30 1954-03-23 Theodore W Bergquist Safety valve
US2888941A (en) * 1952-12-13 1959-06-02 Honeywell Regulator Co Air-pressure-operated proportional band adjustment
US3056417A (en) * 1958-10-03 1962-10-02 Honeywell Regulator Co Controlling apparatus
US2990847A (en) * 1959-05-25 1961-07-04 Marquardt Corp Fluid flow regulator
US3143134A (en) * 1960-12-12 1964-08-04 John J Karpis Fluid regulator
US3276467A (en) * 1964-01-16 1966-10-04 Phillips Petroleum Co Vapor pressure control in liquefied gas dispensing
US3373765A (en) * 1965-10-23 1968-03-19 Controls Co Of America Electric reset for pneumatic sensor control
US3586025A (en) * 1969-06-19 1971-06-22 Foxboro Co Fluid system resistance temperature compensation
US3669142A (en) * 1970-10-16 1972-06-13 Grove Valve & Regulator Co Expansible tube valve with low pressure bleed
US3823726A (en) * 1971-07-13 1974-07-16 Honeywell Inc Pneumatic control unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Pamphlet - Singer, American Meter Division, "Instructions for the American Axial Flow Valve", May 1973. *

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366672A (en) * 1979-02-02 1983-01-04 Parker-Hannifin Corporation Pilot operated hydraulic device
US4253484A (en) * 1979-07-26 1981-03-03 The Singer Company Valve operator
US4285362A (en) * 1980-02-04 1981-08-25 Sperry Corporation Power transmission
DE3447650A1 (de) * 1983-12-28 1985-07-25 Dieter Hans Friederich Sandton Transvaal Kallenbach Ventilanordnung und hiermit versehener schwimmbeckenreiniger
US4618123A (en) * 1984-03-22 1986-10-21 Ford Motor Company Valve system for a hydraulically controlled starting friction clutch
US4841980A (en) * 1985-11-25 1989-06-27 Lee Arnold St J Automatic arterial blood pressure recorder system
US4926874A (en) * 1985-11-25 1990-05-22 Lee Arnold St J Method for determining blood pressure
WO1991001522A1 (en) * 1989-07-24 1991-02-07 United Technologies Corporation Compensated pressure controller
US5230362A (en) * 1989-07-24 1993-07-27 United Technologies Corporation Compensated pressure controller
US6173735B1 (en) 1999-04-29 2001-01-16 Perry Equipment Corporation Method and apparatus for regulating gas flow
US6418956B1 (en) * 2000-11-15 2002-07-16 Plast-O-Matic Valves, Inc. Pressure controller
US7665713B1 (en) * 2006-06-21 2010-02-23 Hunter Industries, Inc. Sleeve valve for residential and commercial irrigation systems
US20130213496A1 (en) * 2012-02-16 2013-08-22 Mike Lybarger Pressure control system for relief and shutdown of flow
US9169939B2 (en) * 2012-02-16 2015-10-27 Mike Lybarger Pressure control system for relief and shutdown of flow
WO2014060746A1 (en) * 2012-10-16 2014-04-24 Nano-Porous Solutions Limited Pressure swing adsorption apparatus
CN104936675A (zh) * 2012-10-16 2015-09-23 纳米多孔方案有限公司 变压吸附装置
US9480945B2 (en) 2012-10-16 2016-11-01 Nano-Purification Solutions Ltd Pressure swing adsorption apparatus
US20170284604A1 (en) * 2014-07-18 2017-10-05 Instrument Solutions Inc. System, method, and apparatus for regulating the flow of gas
US10508774B2 (en) * 2014-07-18 2019-12-17 Dean Leonidas Koulogianes System, method, and apparatus for regulating the flow of gas
US11204135B2 (en) 2014-07-18 2021-12-21 Devtech Sales, Inc. System, method, and apparatus for regulating the flow of gas
US20190145538A1 (en) * 2017-11-14 2019-05-16 Sur-Flo Meters & Controls Ltd Valve with Expandable Sleeve Fitted Over Perforated Walls of Inlet and Outlet Channels to Control Flow Therebetween
US11156299B2 (en) * 2017-11-14 2021-10-26 Sur-Flo Meters & Controls Ltd Valve with expandable sleeve fitted over perforated walls of inlet and outlet channels to control flow therebetween
CN112253758A (zh) * 2020-09-15 2021-01-22 西藏道一科技设备有限公司 一种高原耐磨换气阀
CN112594421A (zh) * 2020-12-30 2021-04-02 海盐沃企机电设备有限公司 一种先导式安全阀的导阀结构
CN112594421B (zh) * 2020-12-30 2022-07-08 海盐沃企机电设备有限公司 一种先导式安全阀的导阀结构

Also Published As

Publication number Publication date
FR2341890A1 (fr) 1977-09-16
CA1040507A (en) 1978-10-17
GB1537409A (en) 1978-12-29
AU2210577A (en) 1978-08-17
BR7700943A (pt) 1977-10-18
FR2341890B1 (ja) 1981-01-09
NL7701625A (nl) 1977-08-22
DE2707171A1 (de) 1977-08-25
AU502435B2 (en) 1979-07-26
JPS52105330A (en) 1977-09-03

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